Electric switch



May 31,1927. 4

I G. MANN ELECTRIC SWITCH Filed Nov. 30, 1925 60??? [Zia/Z70,

Patented May 31, 1927.

un ts enonen menu, or JACKSON, MICHIGAN,

Assrsnon, BY Means ASSIGNMENTS, T

nnvnorns srnrnooomranv, oraaonsolvg MICHIGAN, A CORPORATION or DELA- WARELECTRIC swrrcn.

Application filed November 30, 1925, Serial No. 72,251.

a which will be strong and durable and comn r in) paratively inexpensivein construction and in which the parts will be securely and firmly heldin position so that the liability of the same becoming loose and shortcircuiting or otherwise becoming inoperative will be reduced to aminimum.

Another object of the invention is to provide a push button snap switchof this character in which the insulating material will be reduced to aminimum and a maximum air space provided around the switch mechanism forincreasing the effectiveness of the insulation when the current isinterrupted.

With these and other objects in view, the invention consists in theconstruction and novel combination and arrangementot parts hereinafterfully described illustrated in the accompanying drawings and pointed outin the claims hereto appended, it being understood that various changesin the form, proportion and minor details of construction, within thescope of the claims, may be resorted to without departing from thespirit or sacrificing any o't'the advantages or" the invention. V

In the drawings Figure 1 is a side elevation of an electr c switchconstructed in accordance with this invention.

Fig. 2 is a similar view, one of the sections of the casing of bodybeing removed to illustrate the manner of mounting the switch mechanism.I

Fig. 3 is a transverse sectional view of the electric switcln the switchmechanism being open.

Fig. 4; is a longitudinal sectional view of the same. the switchmechanism being closed.

Fig. 5 is a detail view of one of the sections of the hollow body orcasing.

Fig. 6 is a detail perspective view of the oblong support.

Fig. 7 is a detail perspective view of the actuator.

Inthe accompanying d *awing in which is illustrated the'preferred'embodiment of the invention, the electric switch is provided with ahollow body or casing composed of two substantially semi-cylindricalsections 1 and 2 designed to be constructed of molded opposite ends withregistering recesses o bakelite or other suitable plastic insulatingmaterial but any suitable materiaL. may be employed in the-constructionotthe casing. The sections of the casing form an interior chamber forthe reception of the snap switch mecl' anism and they are provided attheir 9 forming openings for the passage of the terminal portions of theinsulating wire for carrying the current to the switch "The sections 1and2 are'also provided at opposite'sides with central registeringnotches or recesses 4 for the receptionof the push buttons 5 of theactuator 6 of the snap switch mechanism. 'The sections are securedtogether by connecting screws Thaving their heads counter-sunk in one ofthe sections and engaging counter-sunk nuts 8 in the opposite sectionbut the two sections of the hollow body or casing will besecuredtogether in any other suitable manner as will be readilyunderstoodl I The'section 1 ofthecasing is provided at one side withspaced enlargements 9 arranged at the end portions of that side of thesection adjacent the recesses 3 andirccessed at 10 to form seats forstationary blades 11. The enlargements 9'are spaced apart to pro vide anintervening space or recess 12 to reccivean oblong support 13 of thesnap switch mechanism and the said enlargements are providedwithtransverse extensions 14 forming parallel flanges and providingextensions of the walls of the recess 12. Thestationary switch bladesconsist of blades of suitable conducting 'inaterial bent at right anglesto provide attaching portions to the projecting blades which are locatedat opposite sides of the snap switch mechanism. The attaching portionsof the stationary blades are secured in the recesses of the enlargementsby means of threaded bushings 15 embedded inthe inset sulating materialand having the attaching portions of the stationary switch blades riveted to them and adapted to receivebinding screws 16 for securing theterminals of the connecting wires to the stationary switch bladesin theusual. manner. By embedding thethreaded bushings in the insulatingmaterialthe stationary switch blades are firmly secured to the section Iof the casing and are securely maintainedin proper position withrelation to the snap switch mechanism.

The snap switclr mechanism c mPIises in its construction the said oblongsupport 13;

